SOLUTION: julie paints a house in 4 hours and ken paints the same house in 5 hours. If julie and ken work together, they can paint the house in how many hours and minutes
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Question 807100: julie paints a house in 4 hours and ken paints the same house in 5 hours. If julie and ken work together, they can paint the house in how many hours and minutes
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
Work rates add linearly, so that:
1/4 +1/5 = 1/t
t=(4*5)/(4+5)=20/9
t= 2 2/9 hours
converting the fraction to minutes
(2/9)*60= 13 1/3
1/3 of a minute is 20 sec, so...that the time is 2 hrs, 13 minutes and 20 sec
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